GNC, North Miami

Soon after launching his business in 1935, GNC founder David Shakarian had to overcome a major obstacle: a flood wiped out his first two stores. Undeterred, he erected new buildings, only to witness a decline in customers due to the gasoline rations of WWII. This time he’d rebuild more than just structures, overcoming the challenge by shipping out his goods through the mail, a solution easy on customers’ wallets. It worked, and with the health craze of the '60s, business thrived again. Ever since, GNC has been a leader in the latest health and fitness trends.

Today, GNC is the world's largest specialty retailer of nutritional products. Its more than 4,800 retail locations throughout the country stock numerous vitamins and supplements, all of which meet the company's strict standards for truthful labeling, ingredient safety, and product potency.

GNC carries supplements that aid in sports nutrition, diet, and even beauty. Need personalized wellness guidance? Check out online tools such as GNC’s protein calculator, which helps determine how much protein you need daily for optimal performance.

Already imagining the energy boost you’ll get from swallowing vitamins or sprinkling them over your salad like weird croutons? Don’t forget to check out Groupon’s special collection of GNC coupons for savings on health and nutrition-related products.